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Simplified atom trap by using direct microwave modulation of a diode laser

C. J. Myatt, N. R. Newbury, and C. E. Wieman

C. J. Myatt, N. R. Newbury, and C. E. Wieman

Department of Physics, University of Colorado, and Joint Institute for Laboratory Astrophysics, University of Colorado and National Institute of Standards and Technology, Boulder, Colorado 80309-0440 USA

Abstract

We demonstrate direct microwave modulation of diode lasers operated with optical feedback from a diffraction grating. We obtain substantial fractions of the laser power (2–30%) in a single sideband at frequencies as high 6.8 GHz with 20 mW of microwave power and simple inefficient microwave coupling. Using a single diode as modulated at 6.6 GHz, we trapped 87Rb atoms in a vapor cell. With only 10 mW of microwave power we laser trapped 85% as many atoms as were obtained by using two lasers in the conventional manner.

References

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